1. (

• atmosphere ,
• ambiance ,
• ambience

) a particular environment or surrounding influence; "there was an atmosphere of excitement" ;

2. (

• standard_atmosphere ,
• atmosphere ,
• atm ,
• standard_pressure

) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade ;

3. (

• atmosphere ,
• air ,

) the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air" ;

4. (

• atmosphere ,
• atmospheric_state

) the weather or climate at some place; "the atmosphere was thick with fog" ;

5. (

• atmosphere

) the envelope of gases surrounding any celestial body ;

6. (

• air ,
• aura ,
• atmosphere

) a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance" ;